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<?php

/**
 * This file currently just shows group info, and allows certain priviledged members to add/remove members.
 *
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines http://www.simplemachines.org
 * @copyright 2019 Simple Machines and individual contributors
 * @license http://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC1
 */

if (!defined('SMF'))
    die('No direct access...');

/**
 * Entry point function, permission checks, admin bars, etc.
 * It allows moderators and users to access the group showing functions.
 * It handles permission checks, and puts the moderation bar on as required.
 */
function Groups()
{
    global $context, $txt, $scripturl, $sourcedir, $user_info;

    // The sub-actions that we can do. Format "Function Name, Mod Bar Index if appropriate".
    $subActions = array(
        'index' => array('GroupList', 'view_groups'),
        'members' => array('MembergroupMembers', 'view_groups'),
        'requests' => array('GroupRequests', 'group_requests'),
    );

    // Default to sub action 'index'.
    $_REQUEST['sa'] = isset($_REQUEST['sa']) && isset($subActions[$_REQUEST['sa']]) ? $_REQUEST['sa'] : 'index';

    // Get the template stuff up and running.
    loadLanguage('ManageMembers');
    loadLanguage('ModerationCenter');
    loadTemplate('ManageMembergroups');

    // If we can see the moderation center, and this has a mod bar entry, add the mod center bar.
    if (allowedTo('access_mod_center') || $user_info['mod_cache']['bq'] != '0=1' || $user_info['mod_cache']['gq'] != '0=1' || allowedTo('manage_membergroups'))
    {
        require_once($sourcedir . '/ModerationCenter.php');
        $_GET['area'] = $_REQUEST['sa'] == 'requests' ? 'groups' : 'viewgroups';
        ModerationMain(true);
    }
    // Otherwise add something to the link tree, for normal people.
    else
    {
        isAllowedTo('view_mlist');

        $context['linktree'][] = array(
            'url' => $scripturl . '?action=groups',
            'name' => $txt['groups'],
        );
    }

    // CRUD $subActions as needed.
    call_integration_hook('integrate_manage_groups', array(&$subActions));

    // Call the actual function.
    call_helper($subActions[$_REQUEST['sa']][0]);
}

/**
 * This very simply lists the groups, nothing snazy.
 */
function GroupList()
{
    global $txt, $context, $sourcedir, $scripturl;

    $context['page_title'] = $txt['viewing_groups'];

    // Making a list is not hard with this beauty.
    require_once($sourcedir . '/Subs-List.php');

    // Use the standard templates for showing this.
    $listOptions = array(
        'id' => 'group_lists',
        'title' => $context['page_title'],
        'base_href' => $scripturl . '?action=moderate;area=viewgroups;sa=view',
        'default_sort_col' => 'group',
        'get_items' => array(
            'file' => $sourcedir . '/Subs-Membergroups.php',
            'function' => 'list_getMembergroups',
            'params' => array(
                'regular',
            ),
        ),
        'columns' => array(
            'group' => array(
                'header' => array(
                    'value' => $txt['name'],
                ),
                'data' => array(
                    'function' => function($rowData) use ($scripturl)
                    {
                        // Since the moderator group has no explicit members, no link is needed.
                        if ($rowData['id_group'] == 3)
                            $group_name = $rowData['group_name'];
                        else
                        {
                            $color_style = empty($rowData['online_color']) ? '' : sprintf(' style="color: %1$s;"', $rowData['online_color']);

                            if (allowedTo('manage_membergroups'))
                            {
                                $group_name = sprintf('<a href="%1$s?action=admin;area=membergroups;sa=members;group=%2$d"%3$s>%4$s</a>', $scripturl, $rowData['id_group'], $color_style, $rowData['group_name']);
                            }
                            else
                            {
                                $group_name = sprintf('<a href="%1$s?action=groups;sa=members;group=%2$d"%3$s>%4$s</a>', $scripturl, $rowData['id_group'], $color_style, $rowData['group_name']);
                            }
                        }

                        // Add a help option for moderator and administrator.
                        if ($rowData['id_group'] == 1)
                            $group_name .= sprintf(' (<a href="%1$s?action=helpadmin;help=membergroup_administrator" onclick="return reqOverlayDiv(this.href);">?</a>)', $scripturl);
                        elseif ($rowData['id_group'] == 3)
                            $group_name .= sprintf(' (<a href="%1$s?action=helpadmin;help=membergroup_moderator" onclick="return reqOverlayDiv(this.href);">?</a>)', $scripturl);

                        return $group_name;
                    },
                ),
                'sort' => array(
                    'default' => 'CASE WHEN mg.id_group < 4 THEN mg.id_group ELSE 4 END, mg.group_name',
                    'reverse' => 'CASE WHEN mg.id_group < 4 THEN mg.id_group ELSE 4 END, mg.group_name DESC',
                ),
            ),
            'icons' => array(
                'header' => array(
                    'value' => $txt['membergroups_icons'],
                ),
                'data' => array(
                    'db' => 'icons',
                ),
                'sort' => array(
                    'default' => 'mg.icons',
                    'reverse' => 'mg.icons DESC',
                )
            ),
            'moderators' => array(
                'header' => array(
                    'value' => $txt['moderators'],
                ),
                'data' => array(
                    'function' => function($group) use ($txt)
                    {
                        return empty($group['moderators']) ? '<em>' . $txt['membergroups_new_copy_none'] . '</em>' : implode(', ', $group['moderators']);
                    },
                ),
            ),
            'members' => array(
                'header' => array(
                    'value' => $txt['membergroups_members_top'],
                ),
                'data' => array(
                    'function' => function($rowData) use ($txt)
                    {
                        // No explicit members for the moderator group.
                        return $rowData['id_group'] == 3 ? $txt['membergroups_guests_na'] : comma_format($rowData['num_members']);
                    },
                    'class' => 'centercol',
                ),
                'sort' => array(
                    'default' => 'CASE WHEN mg.id_group < 4 THEN mg.id_group ELSE 4 END, 1',
                    'reverse' => 'CASE WHEN mg.id_group < 4 THEN mg.id_group ELSE 4 END, 1 DESC',
                ),
            ),
        ),
    );

    // Create the request list.
    createList($listOptions);

    $context['sub_template'] = 'show_list';
    $context['default_list'] = 'group_lists';
}

/**
 * Display members of a group, and allow adding of members to a group. Silly function name though ;)
 * It can be called from ManageMembergroups if it needs templating within the admin environment.
 * It shows a list of members that are part of a given membergroup.
 * It is called by ?action=moderate;area=viewgroups;sa=members;group=x
 * It requires the manage_membergroups permission.
 * It allows to add and remove members from the selected membergroup.
 * It allows sorting on several columns.
 * It redirects to itself.
 *
 * uses ManageMembergroups template, group_members sub template.
 * @todo: use createList
 */
function MembergroupMembers()
{
    global $txt, $scripturl, $context, $modSettings, $sourcedir, $user_info, $settings, $smcFunc;

    $_REQUEST['group'] = isset($_REQUEST['group']) ? (int) $_REQUEST['group'] : 0;

    // No browsing of guests, membergroup 0 or moderators.
    if (in_array($_REQUEST['group'], array(-1, 0, 3)))
        fatal_lang_error('membergroup_does_not_exist', false);

    // Load up the group details.
    $request = $smcFunc['db_query']('', '
        SELECT id_group AS id, group_name AS name, CASE WHEN min_posts = {int:min_posts} THEN 1 ELSE 0 END AS assignable, hidden, online_color,
            icons, description, CASE WHEN min_posts != {int:min_posts} THEN 1 ELSE 0 END AS is_post_group, group_type
        FROM {db_prefix}membergroups
        WHERE id_group = {int:id_group}
        LIMIT 1',
        array(
            'min_posts' => -1,
            'id_group' => $_REQUEST['group'],
        )
    );
    // Doesn't exist?
    if ($smcFunc['db_num_rows']($request) == 0)
        fatal_lang_error('membergroup_does_not_exist', false);
    $context['group'] = $smcFunc['db_fetch_assoc']($request);
    $smcFunc['db_free_result']($request);

    // Fix the membergroup icons.
    $context['group']['icons'] = explode('#', $context['group']['icons']);
    $context['group']['icons'] = !empty($context['group']['icons'][0]) && !empty($context['group']['icons'][1]) ? str_repeat('<img src="' . $settings['images_url'] . '/membericons/' . $context['group']['icons'][1] . '" alt="*">', $context['group']['icons'][0]) : '';
    $context['group']['can_moderate'] = allowedTo('manage_membergroups') && (allowedTo('admin_forum') || $context['group']['group_type'] != 1);

    $context['linktree'][] = array(
        'url' => $scripturl . '?action=groups;sa=members;group=' . $context['group']['id'],
        'name' => $context['group']['name'],
    );
    $context['can_send_email'] = allowedTo('moderate_forum');

    // Load all the group moderators, for fun.
    $request = $smcFunc['db_query']('', '
        SELECT mem.id_member, mem.real_name
        FROM {db_prefix}group_moderators AS mods
            INNER JOIN {db_prefix}members AS mem ON (mem.id_member = mods.id_member)
        WHERE mods.id_group = {int:id_group}',
        array(
            'id_group' => $_REQUEST['group'],
        )
    );
    $context['group']['moderators'] = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        $context['group']['moderators'][] = array(
            'id' => $row['id_member'],
            'name' => $row['real_name']
        );

        if ($user_info['id'] == $row['id_member'] && $context['group']['group_type'] != 1)
            $context['group']['can_moderate'] = true;
    }
    $smcFunc['db_free_result']($request);

    // If this group is hidden then it can only "exists" if the user can moderate it!
    if ($context['group']['hidden'] && !$context['group']['can_moderate'])
        fatal_lang_error('membergroup_does_not_exist', false);

    // You can only assign membership if you are the moderator and/or can manage groups!
    if (!$context['group']['can_moderate'])
        $context['group']['assignable'] = 0;
    // Non-admins cannot assign admins.
    elseif ($context['group']['id'] == 1 && !allowedTo('admin_forum'))
        $context['group']['assignable'] = 0;

    // Removing member from group?
    if (isset($_POST['remove']) && !empty($_REQUEST['rem']) && is_array($_REQUEST['rem']) && $context['group']['assignable'])
    {
        checkSession();
        validateToken('mod-mgm');

        // Make sure we're dealing with integers only.
        foreach ($_REQUEST['rem'] as $key => $group)
            $_REQUEST['rem'][$key] = (int) $group;

        require_once($sourcedir . '/Subs-Membergroups.php');
        removeMembersFromGroups($_REQUEST['rem'], $_REQUEST['group'], true);
    }
    // Must be adding new members to the group...
    elseif (isset($_REQUEST['add']) && (!empty($_REQUEST['toAdd']) || !empty($_REQUEST['member_add'])) && $context['group']['assignable'])
    {
        checkSession();
        validateToken('mod-mgm');

        $member_query = array();
        $member_parameters = array();

        // Get all the members to be added... taking into account names can be quoted ;)
        $_REQUEST['toAdd'] = strtr($smcFunc['htmlspecialchars']($_REQUEST['toAdd'], ENT_QUOTES), array('&quot;' => '"'));
        preg_match_all('~"([^"]+)"~', $_REQUEST['toAdd'], $matches);
        $member_names = array_unique(array_merge($matches[1], explode(',', preg_replace('~"[^"]+"~', '', $_REQUEST['toAdd']))));

        foreach ($member_names as $index => $member_name)
        {
            $member_names[$index] = trim($smcFunc['strtolower']($member_names[$index]));

            if (strlen($member_names[$index]) == 0)
                unset($member_names[$index]);
        }

        // Any passed by ID?
        $member_ids = array();
        if (!empty($_REQUEST['member_add']))
            foreach ($_REQUEST['member_add'] as $id)
                if ($id > 0)
                    $member_ids[] = (int) $id;

        // Construct the query pelements.
        if (!empty($member_ids))
        {
            $member_query[] = 'id_member IN ({array_int:member_ids})';
            $member_parameters['member_ids'] = $member_ids;
        }
        if (!empty($member_names))
        {
            $member_query[] = 'LOWER(member_name) IN ({array_string:member_names})';
            $member_query[] = 'LOWER(real_name) IN ({array_string:member_names})';
            $member_parameters['member_names'] = $member_names;
        }

        $members = array();
        if (!empty($member_query))
        {
            $request = $smcFunc['db_query']('', '
                SELECT id_member
                FROM {db_prefix}members
                WHERE (' . implode(' OR ', $member_query) . ')
                    AND id_group != {int:id_group}
                    AND FIND_IN_SET({int:id_group}, additional_groups) = 0',
                array_merge($member_parameters, array(
                    'id_group' => $_REQUEST['group'],
                ))
            );
            while ($row = $smcFunc['db_fetch_assoc']($request))
                $members[] = $row['id_member'];
            $smcFunc['db_free_result']($request);
        }

        // @todo Add $_POST['additional'] to templates!

        // Do the updates...
        if (!empty($members))
        {
            require_once($sourcedir . '/Subs-Membergroups.php');
            addMembersToGroup($members, $_REQUEST['group'], isset($_POST['additional']) || $context['group']['hidden'] ? 'only_additional' : 'auto', true);
        }
    }

    // Sort out the sorting!
    $sort_methods = array(
        'name' => 'real_name',
        'email' => 'email_address',
        'active' => 'last_login',
        'registered' => 'date_registered',
        'posts' => 'posts',
    );

    // They didn't pick one, default to by name..
    if (!isset($_REQUEST['sort']) || !isset($sort_methods[$_REQUEST['sort']]))
    {
        $context['sort_by'] = 'name';
        $querySort = 'real_name';
    }
    // Otherwise default to ascending.
    else
    {
        $context['sort_by'] = $_REQUEST['sort'];
        $querySort = $sort_methods[$_REQUEST['sort']];
    }

    $context['sort_direction'] = isset($_REQUEST['desc']) ? 'down' : 'up';

    // The where on the query is interesting. Non-moderators should only see people who are in this group as primary.
    if ($context['group']['can_moderate'])
        $where = $context['group']['is_post_group'] ? 'id_post_group = {int:group}' : 'id_group = {int:group} OR FIND_IN_SET({int:group}, additional_groups) != 0';
    else
        $where = $context['group']['is_post_group'] ? 'id_post_group = {int:group}' : 'id_group = {int:group}';

    // Count members of the group.
    $request = $smcFunc['db_query']('', '
        SELECT COUNT(*)
        FROM {db_prefix}members
        WHERE ' . $where,
        array(
            'group' => $_REQUEST['group'],
        )
    );
    list ($context['total_members']) = $smcFunc['db_fetch_row']($request);
    $smcFunc['db_free_result']($request);
    $context['total_members'] = comma_format($context['total_members']);

    // Create the page index.
    $context['page_index'] = constructPageIndex($scripturl . '?action=' . ($context['group']['can_moderate'] ? 'moderate;area=viewgroups' : 'groups') . ';sa=members;group=' . $_REQUEST['group'] . ';sort=' . $context['sort_by'] . (isset($_REQUEST['desc']) ? ';desc' : ''), $_REQUEST['start'], $context['total_members'], $modSettings['defaultMaxMembers']);
    $context['start'] = $_REQUEST['start'];
    $context['can_moderate_forum'] = allowedTo('moderate_forum');

    // Load up all members of this group.
    $request = $smcFunc['db_query']('', '
        SELECT id_member, member_name, real_name, email_address, member_ip, date_registered, last_login,
            posts, is_activated, real_name
        FROM {db_prefix}members
        WHERE ' . $where . '
        ORDER BY ' . $querySort . ' ' . ($context['sort_direction'] == 'down' ? 'DESC' : 'ASC') . '
        LIMIT {int:start}, {int:max}',
        array(
            'group' => $_REQUEST['group'],
            'start' => $context['start'],
            'max' => $modSettings['defaultMaxMembers'],
        )
    );
    $context['members'] = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        $row['member_ip'] = inet_dtop($row['member_ip']);
        $last_online = empty($row['last_login']) ? $txt['never'] : timeformat($row['last_login']);

        // Italicize the online note if they aren't activated.
        if ($row['is_activated'] % 10 != 1)
            $last_online = '<em title="' . $txt['not_activated'] . '">' . $last_online . '</em>';

        $context['members'][] = array(
            'id' => $row['id_member'],
            'name' => '<a href="' . $scripturl . '?action=profile;u=' . $row['id_member'] . '">' . $row['real_name'] . '</a>',
            'email' => $row['email_address'],
            'ip' => '<a href="' . $scripturl . '?action=trackip;searchip=' . $row['member_ip'] . '">' . $row['member_ip'] . '</a>',
            'registered' => timeformat($row['date_registered']),
            'last_online' => $last_online,
            'posts' => comma_format($row['posts']),
            'is_activated' => $row['is_activated'] % 10 == 1,
        );
    }
    $smcFunc['db_free_result']($request);

    // Select the template.
    $context['sub_template'] = 'group_members';
    $context['page_title'] = $txt['membergroups_members_title'] . ': ' . $context['group']['name'];
    createToken('mod-mgm');

    if ($context['group']['assignable'])
        loadJavaScriptFile('suggest.js', array('defer' => false, 'minimize' => true), 'smf_suggest');
}

/**
 * Show and manage all group requests.
 */
function GroupRequests()
{
    global $txt, $context, $scripturl, $user_info, $sourcedir, $smcFunc, $modSettings;

    // Set up the template stuff...
    $context['page_title'] = $txt['mc_group_requests'];
    $context['sub_template'] = 'show_list';

    // Verify we can be here.
    if ($user_info['mod_cache']['gq'] == '0=1')
        isAllowedTo('manage_membergroups');

    // Normally, we act normally...
    $where = ($user_info['mod_cache']['gq'] == '1=1' || $user_info['mod_cache']['gq'] == '0=1' ? $user_info['mod_cache']['gq'] : 'lgr.' . $user_info['mod_cache']['gq']);

    if (isset($_GET['closed']))
        $where .= ' AND lgr.status != {int:status_open}';
    else
        $where .= ' AND lgr.status = {int:status_open}';

    $where_parameters = array(
        'status_open' => 0,
    );

    // We've submitted?
    if (isset($_POST[$context['session_var']]) && !empty($_POST['groupr']) && !empty($_POST['req_action']))
    {
        checkSession();
        validateToken('mod-gr');

        // Clean the values.
        foreach ($_POST['groupr'] as $k => $request)
            $_POST['groupr'][$k] = (int) $request;

        $log_changes = array();

        // If we are giving a reason (And why shouldn't we?), then we don't actually do much.
        if ($_POST['req_action'] == 'reason')
        {
            // Different sub template...
            $context['sub_template'] = 'group_request_reason';
            // And a limitation. We don't care that the page number bit makes no sense, as we don't need it!
            $where .= ' AND lgr.id_request IN ({array_int:request_ids})';
            $where_parameters['request_ids'] = $_POST['groupr'];

            $context['group_requests'] = list_getGroupRequests(0, $modSettings['defaultMaxListItems'], 'lgr.id_request', $where, $where_parameters);

            // Need to make another token for this.
            createToken('mod-gr');

            // Let obExit etc sort things out.
            obExit();
        }
        // Otherwise we do something!
        else
        {
            $request = $smcFunc['db_query']('', '
                SELECT lgr.id_request
                FROM {db_prefix}log_group_requests AS lgr
                WHERE ' . $where . '
                    AND lgr.id_request IN ({array_int:request_list})',
                array(
                    'request_list' => $_POST['groupr'],
                    'status_open' => 0,
                )
            );
            $request_list = array();
            while ($row = $smcFunc['db_fetch_assoc']($request))
            {
                if (!isset($log_changes[$row['id_request']]))
                    $log_changes[$row['id_request']] = array(
                        'id_request' => $row['id_request'],
                        'status' => $_POST['req_action'] == 'approve' ? 1 : 2, // 1 = approved, 2 = rejected
                        'id_member_acted' => $user_info['id'],
                        'member_name_acted' => $user_info['name'],
                        'time_acted' => time(),
                        'act_reason' => $_POST['req_action'] != 'approve' && !empty($_POST['groupreason']) && !empty($_POST['groupreason'][$row['id_request']]) ? $smcFunc['htmlspecialchars']($_POST['groupreason'][$row['id_request']], ENT_QUOTES) : '',
                    );
                $request_list[] = $row['id_request'];
            }
            $smcFunc['db_free_result']($request);

            // Add a background task to handle notifying people of this request
            $data = $smcFunc['json_encode'](array('member_id' => $user_info['id'], 'member_ip' => $user_info['ip'], 'request_list' => $request_list, 'status' => $_POST['req_action'], 'reason' => isset($_POST['groupreason']) ? $_POST['groupreason'] : '', 'time' => time()));
            $smcFunc['db_insert']('insert', '{db_prefix}background_tasks',
                array('task_file' => 'string-255', 'task_class' => 'string-255', 'task_data' => 'string', 'claimed_time' => 'int'),
                array('$sourcedir/tasks/GroupAct-Notify.php', 'GroupAct_Notify_Background', $data, 0), array()
            );

            // Some changes to log?
            if (!empty($log_changes))
            {
                foreach ($log_changes as $id_request => $details)
                {
                    $smcFunc['db_query']('', '
                        UPDATE {db_prefix}log_group_requests
                        SET status = {int:status},
                            id_member_acted = {int:id_member_acted},
                            member_name_acted = {string:member_name_acted},
                            time_acted = {int:time_acted},
                            act_reason = {string:act_reason}
                        WHERE id_request = {int:id_request}',
                        $details
                    );
                }
            }
        }
    }

    // We're going to want this for making our list.
    require_once($sourcedir . '/Subs-List.php');

    // This is all the information required for a group listing.
    $listOptions = array(
        'id' => 'group_request_list',
        'width' => '100%',
        'items_per_page' => $modSettings['defaultMaxListItems'],
        'no_items_label' => $txt['mc_groupr_none_found'],
        'base_href' => $scripturl . '?action=groups;sa=requests',
        'default_sort_col' => 'member',
        'get_items' => array(
            'function' => 'list_getGroupRequests',
            'params' => array(
                $where,
                $where_parameters,
            ),
        ),
        'get_count' => array(
            'function' => 'list_getGroupRequestCount',
            'params' => array(
                $where,
                $where_parameters,
            ),
        ),
        'columns' => array(
            'member' => array(
                'header' => array(
                    'value' => $txt['mc_groupr_member'],
                ),
                'data' => array(
                    'db' => 'member_link',
                ),
                'sort' => array(
                    'default' => 'mem.member_name',
                    'reverse' => 'mem.member_name DESC',
                ),
            ),
            'group' => array(
                'header' => array(
                    'value' => $txt['mc_groupr_group'],
                ),
                'data' => array(
                    'db' => 'group_link',
                ),
                'sort' => array(
                    'default' => 'mg.group_name',
                    'reverse' => 'mg.group_name DESC',
                ),
            ),
            'reason' => array(
                'header' => array(
                    'value' => $txt['mc_groupr_reason'],
                ),
                'data' => array(
                    'db' => 'reason',
                ),
            ),
            'date' => array(
                'header' => array(
                    'value' => $txt['date'],
                    'style' => 'width: 18%; white-space:nowrap;',
                ),
                'data' => array(
                    'db' => 'time_submitted',
                ),
            ),
            'action' => array(
                'header' => array(
                    'value' => '<input type="checkbox" onclick="invertAll(this, this.form);">',
                    'style' => 'width: 4%;',
                    'class' => 'centercol',
                ),
                'data' => array(
                    'sprintf' => array(
                        'format' => '<input type="checkbox" name="groupr[]" value="%1$d">',
                        'params' => array(
                            'id' => false,
                        ),
                    ),
                    'class' => 'centercol',
                ),
            ),
        ),
        'form' => array(
            'href' => $scripturl . '?action=groups;sa=requests',
            'include_sort' => true,
            'include_start' => true,
            'hidden_fields' => array(
                $context['session_var'] => $context['session_id'],
            ),
            'token' => 'mod-gr',
        ),
        'additional_rows' => array(
            array(
                'position' => 'bottom_of_list',
                'value' => '
                    <select name="req_action" onchange="if (this.value != 0 &amp;&amp; (this.value == \'reason\' || confirm(\'' . $txt['mc_groupr_warning'] . '\'))) this.form.submit();">
                        <option value="0">' . $txt['with_selected'] . ':</option>
                        <option value="0" disabled>---------------------</option>
                        <option value="approve">' . $txt['mc_groupr_approve'] . '</option>
                        <option value="reject">' . $txt['mc_groupr_reject'] . '</option>
                        <option value="reason">' . $txt['mc_groupr_reject_w_reason'] . '</option>
                    </select>
                    <input type="submit" name="go" value="' . $txt['go'] . '" onclick="var sel = document.getElementById(\'req_action\'); if (sel.value != 0 &amp;&amp; sel.value != \'reason\' &amp;&amp; !confirm(\'' . $txt['mc_groupr_warning'] . '\')) return false;" class="button">',
                'class' => 'floatright',
            ),
        ),
    );

    if (isset($_GET['closed']))
    {
        // Closed requests don't require interaction.
        unset($listOptions['columns']['action'], $listOptions['form'], $listOptions['additional_rows'][0]);
        $listOptions['base_href'] .= 'closed';
    }

    // Create the request list.
    createToken('mod-gr');
    createList($listOptions);

    $context['default_list'] = 'group_request_list';
    $context[$context['moderation_menu_name']]['tab_data'] = array(
        'title' => $txt['mc_group_requests'],
    );
}

/**
 * Callback function for createList().
 *
 * @param string $where The WHERE clause for the query
 * @param array $where_parameters The parameters for the WHERE clause
 * @return int The number of group requests
 */
function list_getGroupRequestCount($where, $where_parameters)
{
    global $smcFunc;

    $request = $smcFunc['db_query']('', '
        SELECT COUNT(*)
        FROM {db_prefix}log_group_requests AS lgr
        WHERE ' . $where,
        array_merge($where_parameters, array(
        ))
    );
    list ($totalRequests) = $smcFunc['db_fetch_row']($request);
    $smcFunc['db_free_result']($request);

    return $totalRequests;
}

/**
 * Callback function for createList()
 *
 * @param int $start The result to start with
 * @param int $items_per_page The number of items per page
 * @param string $sort An SQL sort expression (column/direction)
 * @param string $where Data for the WHERE clause
 * @param string $where_parameters Parameter values to be inserted into the WHERE clause
 * @return array An array of group requests
 * Each group request has:
 *      'id'
 *      'member_link'
 *      'group_link'
 *      'reason'
 *      'time_submitted'
 */
function list_getGroupRequests($start, $items_per_page, $sort, $where, $where_parameters)
{
    global $smcFunc, $scripturl, $txt;

    $request = $smcFunc['db_query']('', '
        SELECT
            lgr.id_request, lgr.id_member, lgr.id_group, lgr.time_applied, lgr.reason,
            lgr.status, lgr.id_member_acted, lgr.member_name_acted, lgr.time_acted, lgr.act_reason,
            mem.member_name, mg.group_name, mg.online_color, mem.real_name
        FROM {db_prefix}log_group_requests AS lgr
            INNER JOIN {db_prefix}members AS mem ON (mem.id_member = lgr.id_member)
            INNER JOIN {db_prefix}membergroups AS mg ON (mg.id_group = lgr.id_group)
        WHERE ' . $where . '
        ORDER BY {raw:sort}
        LIMIT {int:start}, {int:max}',
        array_merge($where_parameters, array(
            'sort' => $sort,
            'start' => $start,
            'max' => $items_per_page,
        ))
    );
    $group_requests = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        if (empty($row['reason']))
            $reason = '<em>(' . $txt['mc_groupr_no_reason'] . ')</em>';
        else
            $reason = censorText($row['reason']);

        if (isset($_GET['closed']))
        {
            if ($row['status'] == 1)
                $reason .= '<br><br><strong>' . $txt['mc_groupr_approved'] . '</strong>';
            elseif ($row['status'] == 2)
                $reason .= '<br><br><strong>' . $txt['mc_groupr_rejected'] . '</strong>';

            $reason .= ' (' . timeformat($row['time_acted']) . ')';
            if (!empty($row['act_reason']))
                $reason .= '<br><br>' . censorText($row['act_reason']);
        }

        $group_requests[] = array(
            'id' => $row['id_request'],
            'member_link' => '<a href="' . $scripturl . '?action=profile;u=' . $row['id_member'] . '">' . $row['real_name'] . '</a>',
            'group_link' => '<span style="color: ' . $row['online_color'] . '">' . $row['group_name'] . '</span>',
            'reason' => $reason,
            'time_submitted' => timeformat($row['time_applied']),
        );
    }
    $smcFunc['db_free_result']($request);

    return $group_requests;
}

?>